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Water pollution in the United States (3 C, 95 P) Pages in category "Water pollution by country" The following 2 pages are in this category, out of 2 total.
A practical definition of water pollution is: "Water pollution is the addition of substances or energy forms that directly or indirectly alter the nature of the water body in such a manner that negatively affects its legitimate uses." [1]: 6 Water is typically referred to as polluted when it is impaired by anthropogenic contaminants.
Name Location Dependent population Description Sources of pollution Impact Bharalu River: Assam, India: One of the most polluted rivers in the state of Assam. [19] The biochemical oxygen demand of the river is 52 mg/L in compared to the permissible limit set by the National River Conservation Directorate (NRCD) at 3 mg/L. [20]
This list contains the top 500 cities by PM2.5 annual mean concentration measurement as documented by the World Health Organization covering the period from 2010 to 2022. The January 2024 version of the WHO database contains results of ambient (outdoor) air pollution monitoring from almost 5,390 towns and cities in 63 countries.
The following list of countries by air pollution sorts the countries of the world according to their average measured concentration of particulate matter in micrograms per cubic meter (μg/m 3). The World Health Organization's recommended limit is 10 micrograms per cubic meter, although there are also various national guideline values, which ...
Below is a list of 526 cities sorted by their annual mean concentration of PM2.5 (μg/m 3) in 2022. [1] [2] By default the least polluted cities which have fewest particulates in the air come first. Click on the arrows next to the table's headers to have the most polluted cities ranked first. Please note that constraints exist in this type of ...
Water pollution by country (14 C, 2 P) A. Pollution in Australia (1 C, 6 P) B. ... Pages in category "Pollution by country" This category contains only the following ...
Selenium pollution; Septic drain field; Sewage; Sewage regulation and administration; Sewage treatment; Sex effects of water pollution; Silt fence; Siltation; Sono arsenic filter; Source water protection; SPEARpesticides; Spent caustic; Sphaerotilus natans; Steam-assisted gravity drainage; Streeter–Phelps equation; Sulfur water; Surface ...